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-Extrusion through square die: (a) numerical mesh, (b) the viscosity distribution obtained by FVM, (c) experimentally results, [9], (d) slip-line field solution.
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The theory of plasticity is in poor condition relative to linear elasticity. All existing formulations are approximate at best, and few have any connection to the fundamental (micromechanical) material mechanism responsible. For this reason, all plasticity theories must be considered empirical. Even worse, detailed testing of a plasticity theory re...
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... the degree of deformation ε = 50% will be used to demonstrate the influence of limiting value of 0 in FVM calculation. The zero friction conditions between tool parts and workpiece is simulated. The is given in Fig. 4. It is obvious that the value 0 1 s -1 gives the distribution which best fit to the experimentaly results given in Fig. 3. The effective strain-rate given in Fig. 6 is calculated from the viscosity field given in Fig. ...
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Citations
... There are many solid mechanics problems which can be equivalently considered from the fluid mechanics perspective, for example, in the analysis of extrusion and drawing. Eulerian "fluid" approaches are often used to solve such problems, for example, [46, 48, 50-52, 54, 286, 287, [381][382][383][384][385][386][387][388][389][390][391][392][393]. These methods are more closely related to CFD procedures and are not discussed further here. ...
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